CN211487593U

CN211487593U - Continuous flow reaction system of accurate feeding module capable of eliminating pulse

Info

Publication number: CN211487593U
Application number: CN201921922684.5U
Authority: CN
Inventors: 陈延坤; 王飞
Original assignee: Shandong Nerve Pharmaceutical Fluid System Co ltd
Current assignee: Shandong Nerve Pharmaceutical Fluid System Co ltd
Priority date: 2018-11-15
Filing date: 2019-11-08
Publication date: 2020-09-15
Anticipated expiration: 2029-11-08

Abstract

The utility model relates to a chemical industry pharmacy technical field, concretely relates to can eliminate continuous flow reaction system of accurate feeding module of pulse, its characterized in that: the reactor comprises a feeding device and a reactor, wherein the reactor comprises a shell with an upper opening and a lower opening, the upper end and the lower end of the shell are respectively and sequentially connected with a tube plate and a baffle box, the tube plate comprises an expansion tube plate and a welding tube plate, the expansion tube plate is fixedly connected with the upper end and the lower end of the shell, the reaction tube passes through the welding tube plate and is fixedly connected with the expansion tube plate, and a solid catalytic substance is arranged in the baffle box; on the other hand, the box body is convenient to disassemble, and the solid catalytic substance is convenient to disassemble and assemble.

Description

Continuous flow reaction system of accurate feeding module capable of eliminating pulse

Technical Field

The utility model relates to a chemical industry pharmacy technical field, concretely relates to can eliminate continuous flow reaction system of accurate feeding module of pulse.

Background

Reactor equipment commonly used in the technical field of chemical pharmacy comprises a tubular reactor, a kettle reactor and the like, wherein the kettle reactor is usually provided with a stirring device in a reaction kettle for mixing liquid-phase reactants, and the product has low purity, low reaction conversion rate and serious energy consumption and pollution. Because the chemical pharmaceutical field has high requirements on the purity and the like of products, the reactor equipment commonly used is a continuous flow tubular reactor. In the use process of the continuous flow tubular reactor, part of reactants often need the solid catalytic substance to catalyze the reaction, and no special equipment is provided for the installation, fixation and disassembly of the solid catalytic substance, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can eliminate continuous flow reaction system of accurate feeding module of pulse to solve current continuous flow reactor and do not have the professional equipment of installation, fixed and the dismantlement of solid catalytic material, use inconvenient technical problem.

A continuous flow reaction system with pulse-canceling precision feed module, comprising: the device comprises a feeding device and a reactor, wherein the feeding device comprises a material tank, a diaphragm metering pump, a pulse damper and a check valve, the material tank is communicated with a reactant inlet of the reactor through a material pipeline, and the diaphragm metering pump, the pulse damper and the check valve are sequentially arranged on the material pipeline from top to bottom;

the reactor is a fixed bed reactor with a double-tube plate structure and comprises a shell with an upper opening and a lower opening, the upper end and the lower end of the shell are respectively connected with a tube plate and a baffle box in sequence,

a reaction tube group is arranged in the shell and comprises a plurality of reaction tubes, the upper end and the lower end of each reaction tube penetrate through and are fixedly connected on the tube plate,

the baffle box is provided with a plurality of separated baffle grooves, the tube plate and the baffle grooves of the baffle box jointly form a plurality of baffle channels to be separated, the adjacent reaction tubes are sequentially communicated in series one by one through the corresponding baffle channels in the medium flowing sequence, the baffle box is provided with a reactant inlet and a reactant outlet,

the tube plates comprise an expansion tube plate and a welding tube plate, the expansion tube plate is fixedly connected at the upper end and the lower end of the shell, the reaction tube passes through the expansion tube plate and is fixedly connected with the expansion tube plate, the welding tube plate is tightly attached to the deflection tube box through a flange and a bolt, the reaction tube passes through the welding tube plate and is fixedly connected with the expansion tube plate,

the baffling groove is internally provided with a solid catalytic substance.

Preferably, the reaction tube is a straight tube or a spirally wound tube having a certain helix angle.

Preferably, the continuous flow reaction system can eliminate the pulse precision feeding module, and the solid catalytic material occupies part or all of the cross section of the baffle groove.

Preferably, the continuous flow reaction system of the precise feeding module capable of eliminating pulses is characterized in that a through hole is formed in the solid catalytic material, the reactant flows through the solid catalytic material through the through hole, and the through hole is a large hole or consists of a plurality of small holes.

Preferably, the continuous flow reaction system of the pulse-eliminating precision feeding module is a semi-circular baffle groove, the cross section of the baffle groove is a semi-circular shape matched with the baffle groove, the width dimension of the middle part of the baffle groove is larger than the width dimensions of the two ends, the solid catalytic material is placed in the middle part of the baffle groove, and the length dimension of the solid catalytic material is equivalent to the length dimension of the middle part of the baffle groove.

Preferably, the continuous flow reaction system of the precise feeding module capable of eliminating pulses is characterized in that a tube plate or/and a diversion groove is/are provided with an installation groove for accommodating the solid catalytic substance, and the solid catalytic substance is installed in the installation groove.

When the continuous flow reaction system of the accurate feeding module capable of eliminating the pulse is used, reactants circulate in the reactor body through the reaction tube, adjacent tube holes are communicated through the baffling groove in the transmission direction of the reaction tube, and the solid catalytic substance is arranged in the baffling groove, so that on one hand, the compound can be catalyzed once when flowing through the baffling groove once; on the other hand, the box body is convenient to disassemble, and the solid catalytic substance is convenient to disassemble and assemble.

Drawings

FIG. 1: is a structural schematic diagram with a local section (the reaction tube is a straight tube) of the utility model;

FIG. 2: is a structural schematic diagram of the reaction tube group (the reaction tube is a straight tube);

FIG. 3: is a schematic structural view of the spiral baffle of the utility model;

FIG. 4: is a bottom view of an example of the upper baffle box of the present invention;

FIG. 5: is a top view of an example of the lower baffle box of the present invention;

FIG. 6: is a schematic structural diagram of the lower sealing gasket of the utility model;

FIG. 7: the utility model discloses a partial section structure schematic diagram of a tube plate;

FIG. 8: the partial section structure schematic diagram of the reaction tube of the utility model;

FIG. 9: the utility model discloses a partial section side view structure schematic diagram of an example of a solid catalytic substance;

FIG. 10: the utility model discloses a partial section main view structure schematic diagram of an example of the solid catalytic substance;

FIG. 11: the utility model discloses a partial section main view structure schematic diagram of an example of the solid catalytic substance;

FIG. 12: is a bottom view of an example of the upper baffle box of the present invention;

FIG. 13: the utility model discloses a partial section overlooking structure schematic diagram of an example of the solid catalytic substance;

FIG. 14: the utility model discloses a three-dimensional structure schematic diagram of an example of the solid catalytic substance;

FIG. 15: the utility model is a schematic diagram of the connection structure of the double tube plates and the reaction tubes;

FIG. 16: is the overall structure schematic diagram of the reaction system of the utility model.

FIG. 17: is a structural schematic diagram with a local section (the reaction tube is a spiral winding tube) of the utility model;

FIG. 18: is a structural schematic diagram of the reaction tube group of the utility model (the reaction tube is a spiral winding tube);

FIG. 19: is a structural schematic diagram with a local section of the reaction tube group (the reaction tube is a spiral winding tube);

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A continuous flow reaction system with pulse-canceling precision feed module, comprising: comprises a feeding device and a reactor, wherein the feeding device comprises a feeding device and a reactor,

the feeding device comprises a material tank 701, a diaphragm metering pump 707, a pulse damper 704 and a check valve 706,

the material tank 701 is communicated with a reactant inlet 41 of the reactor through a material pipeline 712, and a diaphragm metering pump 707, a pulse damper 704 and a check valve 706 are sequentially arranged on the material pipeline 712;

the reactor is a fixed bed reactor with a double-tube plate structure and comprises a shell 1, wherein the upper end and the lower end of the shell 1 are respectively connected with a tube plate 3 and a baffle box 4 in sequence,

the reaction tube group 2 is arranged in the shell 1, the reaction tube group 2 comprises a plurality of reaction tubes 20, the reaction tubes 20 are straight tubes or spiral winding tubes with certain spiral rising angles, the upper end and the lower end of each reaction tube 20 penetrate through and are fixedly connected on the tube plate 3,

the baffle box 4 is provided with a plurality of separated baffle grooves 40, the tube plate 3 and the baffle grooves 40 of the baffle box 4 jointly form a plurality of baffle channels to be separated, the adjacent reaction tubes 20 are sequentially communicated in series one by one through the corresponding baffle channels in the medium flowing sequence, the baffle box 4 is provided with a reactant inlet 41 and a reactant outlet 42,

the tube plate 3 comprises an expansion tube plate 30 and a welding tube plate 31, the expansion tube plate 30 is fixedly connected at the upper end and the lower end of the shell 1, the reaction tube 20 passes through the expansion tube plate 30 and is fixedly connected with the expansion tube plate 30, the welding tube plate 31 is tightly attached with the baffle box 4 through a flange and a bolt, the reaction tube 20 passes through the welding tube plate 31 and is fixedly connected with the expansion tube plate 30,

the diversion trench 40 is provided with a solid catalytic material 44.

The solid catalytic material 44 may occupy part or all of the space of the cross section of the baffled channel 40. Fig. 7 and 9 are schematic views showing the whole space, and fig. 10 and 11 are schematic views showing a part of the space. When occupying part of the space, it is not necessary to provide flow-guiding holes, and the reactants will contact the solid catalyst 44 during the flowing process. When the catalyst occupies the whole space, the solid catalyst 44 is provided with a through hole 45, the reactant flows through the solid catalyst 44 through the through hole 45, and the through hole 45 is a large hole or consists of a plurality of small holes. The through holes are used for guiding the flow of reactants from the passage 45 through the catalytic material and generating a catalytic effect.

The solid catalyst 44 may be fixed in the baffle 40 in the following ways:

the first fixing mode: as shown in fig. 7, the solid catalyst 44 is disposed in the cavity formed by the tube plate 3 and the diversion groove 40, and the solid catalyst 44 is in interference fit with the cavity.

And (2) fixing form II: as shown in fig. 9, a first mounting groove 46 is formed on the inner wall of the diversion groove 40, and a part of the solid catalyst 44 is inserted into the first mounting groove 46 and fixed in position relative to the diversion groove 40. The first mounting groove 46 may be formed at the bottom of the bending groove 40 or at the side wall of the first mounting groove 46, or the first mounting groove 46 may be formed at both the bottom and the side wall.

The fixed form is three: as shown in fig. 9, the tube plate 3 is formed with a second fitting groove 47 at the corresponding position of the baffle groove 40, and a part of the solid catalyst 44 is inserted into the second fitting groove 47 to be fixed in position relative to the baffle groove 40 and the tube plate 3.

The fixed form is four: as shown in fig. 13, the diversion trench 40 may be a wedge-shaped trench and the solid catalyst 44 may be a wedge-shaped block. In the diversion trench 40 of fig. 13, the flow direction of the reactants is from left to right, the solid catalyst 44 is restricted from moving to the right due to the decreasing cross-sectional area of the diversion trench 40 to the right, and the solid catalyst 44 is restricted from moving to the left due to the flow direction of the reactants.

The above fixing forms may be used alone, or a plurality of fixing forms may be combined to be used simultaneously, and fig. 9 is an example of using a plurality of fixing forms simultaneously.

The catalytic passage of the solid catalyst 44 in the baffle 40 may take the form of:

the first channel form: as shown in fig. 7, 11, 13 and 14, the channels in the solid catalyst 44 may be a plurality of relatively small diameter through holes 45, and the reactants pass through the plurality of through holes 45 to perform catalytic reaction. Wherein, the adjacent through holes 45 can be connected by the connecting channel between the adjacent through holes 45.

Channel type two: as shown in fig. 9, the channel in the solid catalyst 44 may be a single through-hole 45 with a relatively large diameter.

The channel form III: as shown in fig. 10, there is a gap between the solid catalyst 44 and the baffle 40, and the gap can be used as a channel through which the reactant flows, such as the gap between the top of the solid catalyst 44 and the baffle 40 in fig. 10. The gap may also be provided on both sides of the solid catalyst 44.

Channel type four: as shown in fig. 10, there is a gap between the solid catalyst 44 and the tube plate 3, and the gap can be used as a channel through which the reactant flows, such as the gap between the bottom of the solid catalyst 44 and the tube plate 3 in fig. 10.

Channel type five: the solid catalyst 44 is in the form of a net having a plurality of meshes.

The above channel forms may be used alone or in combination of a plurality of channel forms to be used simultaneously, and fig. 10 and 11 are two examples of using a plurality of fixing forms simultaneously.

The solid catalyst 44 may use any combination between the above various immobilization forms and channel forms.

The solid catalyst 44 may be a bulk metal catalyst (e.g., electrolytic silver, fused iron, platinum gauze, etc.), a supported metal catalyst (e.g., Ni/Al)₂O₃Hydrogenation catalyst), alloy catalyst (active component is composed of two or more metal atoms, such as Ni-Cu alloy hydrogenation catalyst, LaNi₅Hydrogenation catalysts, etc.), and the like.

In use, in this embodiment, the reactant enters the reaction tube 20 through the reactant inlet 41, adjacent tube holes in the housing 1 are communicated through the baffle groove 40, the reactant is deflected through the baffle groove 40, contacts with the solid catalyst 44 arranged in the baffle groove 40 when flowing through the baffle groove, reacts under the catalytic action of the solid catalyst 44, flows back in the transport direction of the reaction tube 20, and finally leaves the reaction tube 20 through the reactant outlet 42. The adjacent pipelines do not need to be connected through an elbow or a U-shaped pipe and are not limited by the radius of the elbow, the distance between the pipelines is small, the volume of the reactor is small, and the reactor is not easy to damage. The solid catalytic material 44 is arranged in the baffle groove 40, on the one hand, it can catalyze the compound once per flow through the baffle; on the other hand, the box body 4 is convenient to disassemble, and the solid catalytic substance 44 is convenient to disassemble and assemble.

The shell side of the shell 1 is used for circulating a heat transfer medium, so that reactants in the tube side of the reaction tube 20 are kept at a proper temperature, and the heat transfer medium enters through the shell side inlet 10, passes through the shell side in the middle and is finally discharged through the shell side outlet 11.

When the reaction tube 20 is a straight tube, a spiral baffle 81 may be used. The spiral baffling baffle 81 of integral type makes heat transfer medium rise through inside the casing 1 in the spiral vortex formula, and is more abundant and even with the contact of reaction tube 20, and the heat retaining effect is better. For the split type, the integrated spiral baffle 81 is more convenient to install, has better flow guide effect on heat transfer media, and avoids the split type cutoff phenomenon.

When the reaction tube 20 is a spiral wound tube, the spiral wound tube has a better turbulent flow effect in the tube than a straight tube.

As shown in fig. 15, the reaction tube 20 and the expanded tube plate 30 are expanded by the expansion protrusion 200, and the reaction tube 20 and the welded tube plate 31 are welded by the welding protrusion 201 to be fixedly connected.

As shown in fig. 16, the material is pumped by a diaphragm metering pump 707 into the reactant inlet 41 through a material pipe 712, and the reactant is reacted in the reactor and discharged through a reactant outlet 42. The catalytic reaction system adopts a plurality of metering pumps for feeding, and has extremely high requirement on precision; however, the metering pumps have the problem of pulse delivery, and the flow delivery proportion of the multiple pumps is unstable under pulse delivery; by adopting a hydraulic diaphragm metering pump and arranging a pulse damper 704 behind the pump, pulses can be eliminated, and high-precision feeding can be obtained.

The reaction tube 20 is a straight tube, the shell 1 is internally provided with an integrated spiral baffle 81, the upper end and the lower end of the fixed column 82 are respectively and fixedly installed on the tube plate 3, the spiral baffle 81 is installed and fixed on the fixed column 82, and the reaction tube 20 penetrates through the spiral baffle 81 and is fixedly connected with the tube plate 3.

It should be understood, however, that the present invention is not limited to the particular embodiments described above, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A continuous flow reaction system with pulse-canceling precision feed module, comprising: comprises a feeding device and a reactor, wherein the feeding device comprises a feeding device and a reactor,

the feeding device comprises a material tank (701), a diaphragm metering pump (707), a pulse damper (704) and a check valve (706),

the material tank (701) is communicated with a reactant inlet (41) of the reactor through a material pipeline (712), and a diaphragm metering pump (707), a pulse damper (704) and a check valve (706) are sequentially arranged on the material pipeline (712);

the reactor is a fixed bed reactor with a double-tube plate structure and comprises a shell (1) with an upper opening and a lower opening, the upper end and the lower end of the shell (1) are respectively connected with a tube plate (3) and a baffle box (4) in sequence,

a reaction tube group (2) is arranged in the shell (1), the reaction tube group (2) comprises a plurality of reaction tubes (20), the upper end and the lower end of each reaction tube (20) penetrate through and are fixedly connected on the tube plate (3),

the baffle box (4) is provided with a plurality of separated baffle grooves (40), the tube plate (3) and the baffle grooves (40) of the baffle box (4) jointly form a plurality of baffle channels to be separated, the reaction tubes (20) which are adjacent in the medium flow sequence are sequentially communicated in series one by one through the corresponding baffle channels, the baffle box (4) is provided with a reactant inlet (41) and a reactant outlet (42),

the tube plate (3) comprises an expansion tube plate (30) and a welding tube plate (31), the expansion tube plate (30) is fixedly connected at the upper end and the lower end of the shell (1), the reaction tube (20) penetrates through the expansion tube plate (30) and is fixedly connected with the expansion tube plate (30), the welding tube plate (31) is tightly attached to the baffle box (4) through a flange and a bolt, the reaction tube (20) penetrates through the welding tube plate (31) and is fixedly connected with the expansion tube plate (30),

the baffling groove (40) is internally provided with a solid catalytic material (44).

2. The continuous-flow reaction system of claim 1, wherein the solid catalyst (44) occupies part or all of the cross-section of the baffled channel (40).

3. The continuous-flow reaction system of the pulse-canceled precision feed module according to claim 2, characterized in that the solid catalyst (44) is provided with a through hole (45), the reactant flows through the solid catalyst (44) through the through hole (45), and the through hole (45) is a large hole or is composed of a plurality of small holes.

4. The continuous flow reaction system of the pulse-canceling precision feed module according to claim 3, wherein the cross section of the baffle groove (40) is semicircular, the cross section of the solid catalyst (44) is semicircular to fit the baffle groove (40), the width dimension of the central portion of the baffle groove (40) is larger than the width dimensions of the two ends, the solid catalyst (44) is placed in the central portion of the baffle groove (40), and the length dimension of the solid catalyst (44) is equivalent to the length dimension of the central portion of the baffle groove (40).

5. The continuous-flow reaction system of the pulse-canceling precision feed module according to claim 1, characterized in that the tube plate (3) and/or the baffle (40) is provided with a mounting groove for accommodating the solid catalyst (44), and the solid catalyst (44) is mounted in the mounting groove.

6. The continuous-flow reaction system of claim 1, wherein the reaction tube (20) is a straight tube or a helical winding tube with a certain helix angle.

7. The continuous flow reaction system of the pulse-canceling precision feed module according to claim 6, wherein the reaction tube (20) is a straight tube, the shell (1) is internally provided with an integrated spiral baffle (81), the upper end and the lower end of the fixed column (82) are respectively and fixedly installed on the tube plate (3), the spiral baffle (81) is installed and fixed on the fixed column (82), and the reaction tube (20) penetrates through the spiral baffle (81) and is fixedly connected with the tube plate (3).